Thread Rolling Head Roller Spacing Adjustment
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Solution Overview
Problem
Existing thread rolling heads lack precise and defined adjustment mechanisms for the spacing of profile rollers, often requiring manual rotation and clamping, which can lead to inaccuracies and undesired displacements, especially when dealing with tools having more than two profile rollers.
Innovation Solution
A thread rolling head design featuring a bearing housing with two rotatable housing parts and an adjustment element that can rotate in two directions, allowing for precise adjustment of profile roller spacing through a gearing mechanism and display apparatus, ensuring defined positioning and preventing unintended displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual rotation of housing parts is used to adjust profile roller spacing, then quick adjustment is achieved, but positioning precision deteriorates and undefined positioning occurs
Solution Approach 1:
The patent replaces the manual rotation mechanical system with an automated adjustment mechanism. The adjustment element automatically rotates the first housing part relative to the second housing part based on the position of the profile rollers, eliminating manual intervention and achieving both quick adjustment and precise positioning simultaneously.
Solution Approach 2:
The adjustment element is designed to automatically perform the adjustment function without external manual operation. The system self-regulates the spacing between profile rollers by having the adjustment element respond to the roller positions, making the system self-adjusting and eliminating the trade-off between speed and precision.
2Ease of operation
If manual rotation and clamping of housing parts is used, then adjustment is achieved, but reliability deteriorates due to undesired rotation and displacement
Solution Approach 1:
The patent replaces the manual rotation and clamping mechanical system with an automated adjustment element that continuously maintains the correct positioning. This eliminates the reliability issues associated with manual operations, as the automated system prevents undesired rotation and displacement without requiring operator intervention.
Solution Approach 2:
The adjustment element performs the positioning action in advance and continuously maintains it, rather than relying on manual clamping after adjustment. This preliminary and continuous action ensures that the profile rollers remain precisely positioned without the risk of displacement that occurs with manual clamping systems.
3Manufacturing precision
If two threaded pins are used to adjust profile roller spacing, then adjustment is achieved, but device complexity increases and defined positioning is lost
Solution Approach 1:
The patent merges the functions of multiple adjustment elements into a single adjustment element. Instead of using two threaded pins that operate independently and require sequential adjustment, one adjustment element simultaneously controls the spacing between multiple profile rollers, reducing device complexity while maintaining manufacturing precision.
Solution Approach 2:
The single adjustment element is designed to perform multiple adjustment functions simultaneously. It can adjust the spacing of all profile rollers in one operation, making it a universal adjustment mechanism that replaces multiple specialized components and simplifies the overall device structure.
4Adaptability or versatility
If profile rollers are arranged in conical holders with axial offsetting, then adjustment is achieved, but device complexity increases and positioning precision deteriorates
Solution Approach 1:
The patent replaces the conical holder axial offsetting mechanical system with an automated adjustment element that directly controls profile roller spacing. This substitution eliminates the complexity of conical holders and their offsetting mechanisms while achieving both adaptability and precise, well-defined positioning through automated control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise and defined adjustment of profile roller spacing, improving machining accuracy and ease of use by preventing unwanted rotation and displacement, even with multiple profile rollers, and facilitating safe removal of the rolling head from the workpiece.
Implementation Method 1
a gearing mechanism that changes the spacing of the profile rollers to each other with a relative rotation of the housing parts to each other
Implementation Method 2
the profile rollers are each mounted rotatably on an eccentric shaft (5)
Data Source
AI summary
A thread rolling head includes a bearing housing, in which at least two profile rollers, preferably at least three, are each rotatably mounted on an eccentric shaft. A shank is coupled to the housing, and adjacent profile rollers delimit an insertion section into which a workpiece can be longitudinally inserted. The bearing housing includes two housing parts rotatable relative to each other to change the spacing between the profile rollers. An adjustment element interacts with one of the two housing parts and can rotate about the longitudinal axis thereof. Rotation of the adjustment element in a first direction causes rotation of the two housing parts in a third rotational direction, while its rotation in the second direction causes rotation of the housing parts in a fourth rotational direction counter to the third rotational direction. A display apparatus displays a change of the spacing between the profile rollers.